Environmental Engineering Reference
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Years
a)
Years
b)
Years
c)
2.11
Dependence on the time failure in service (a), average recovery
time (b) and total unavailability (c) of the systems for monitoring
and control of the boiler: 60; - - - - 65; --------- 70 (mean
values and ranges)
data. In Ref. 25 it is proposed to determine the parameters of the linear
model [2.11] using the following information from the data on equipment
failures:
• fraction of failures associated with ageing in the general flow of
failures;
• the rate of failures not associated with ageing.
This approach makes it easy to obtain the desired parameters from the
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